class Phone:
    producer = "apple"  # 厂商

class Camera:
    producer = "suoni"  # 厂商

class Phone2022(Phone, Camera):
    face_id = True  # 面部识别

    def call_by_5g(self):
        print("2022最新5G通话")

phone = Phone2022()

print(phone.producer)  # 打印结果为apple而非suoni
